PHYSIOLOGY
GENERAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Where is calcium stored in a muscle fiber?
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Sarcolemma
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Sarcoplasmic Reticulum
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T-tubule
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Sarcomere
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Explanation:
Detailed explanation-1: -Calcium ions at rest are stored in the sarcoplasmic reticulum (SR) from which they are rapidly released upon the depolarisation of the sarcolemmal and transverse (T-) tubular membranes of the muscle cell.
Detailed explanation-2: -In a muscle fibre, Ca++ is stored in the sarcoplasmic reticulum.
Detailed explanation-3: -The sarcoplasmic reticulum (SR) is a membrane-bound structure found within muscle cells that is similar to the smooth endoplasmic reticulum in other cells. The main function of the SR is to store calcium ions (Ca2+).
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